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  <!-- 19000749许业娜 -->
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      <tr id="title">
        <td>书名</td>
        <td>价格</td>
      </tr>
      <tr  id="one">
        <td>看得见风景的房间</td>
        <td>¥30</td>
      </tr>
      <tr>
        <td>60个瞬间</td>
        <td>¥32</td>
      </tr>
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    </button>  <button class="btnSearch">修改标签样式</button>  <button class="btnCopy">
      复制最后一行</button>
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